[Ischemic stroke: the cardiac workup]
Insights
Cardiac workups for stroke, including Holter monitoring and echocardiography, have limited diagnostic yield for identifying embolic sources. Guidelines suggest targeted, not systematic, use of these tests to guide secondary stroke prevention strategies.
Area of Science:
- Cardiology
- Neurology
- Clinical Medicine
Background:
- Cardiac evaluations like Holter monitoring and echocardiography are frequently used after stroke to find embolic sources.
- Identifying cardiac sources such as atrial fibrillation (AF) or intracardiac thrombus can alter secondary prevention strategies.
Purpose of the Study:
- To systematically review current guidelines on cardiac workup after stroke.
- To evaluate the diagnostic yield and utility of routine cardiac investigations for stroke.
- To determine if targeted or systematic testing is more appropriate for stroke patients.
Main Methods:
- Systematic review of existing clinical guidelines.
- Analysis of recommendations for cardiac investigations post-stroke.
Main Results:
- The diagnostic yield of routine Holter monitoring and echocardiography in stroke patients is limited.
- There is a lack of consensus regarding the utility of these examinations for all stroke types.
- Current guidelines suggest a more targeted approach to cardiac workup rather than systematic screening.
Conclusions:
- Cardiac investigations post-stroke should be selectively applied based on patient risk factors and clinical presentation.
- A targeted strategy may improve the efficiency and effectiveness of secondary stroke prevention.
- Further research is needed to clarify the optimal use of cardiac workup in specific stroke etiologies.
Abstract:
The cardiac workup of stroke often includes a 24 hours Holter and an echocardiography looking for cardiac sources of emboli (atrial fibrillation (AF), intracardiac thrombus, mitral stenosis, recent myocardial infarction, endocarditis, dilated cardiomyopathy...) which would lead to a change of treatment (secondary prevention) aiming at decreasing the risk of recurrence. In case of a stroke with AF, the secondary prevention strategy is well defined (anticoagulants). It is less clear for the other causes. The diagnostic yield of these examinations is limited and there is a lack of consensus in their utility. This systematic review tries to sum up current guidelines. It appears that these examinations should rather be targeted than performed systematically.
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